The track team needs new uniforms. The students plan to sell plush toy tigers (the school mascot) for $5 each. The students find
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Value of cos(x+π) =
Given cosine of x =
i.e., cos(x) =
Also cos() =
. So x =
.
We need to find cos(x+π) = cos().
But its value is not easy to find. So we use trigonometric formulas.
We have the trigonometric formula, cos (x+π) = - cos(x) = - =
Cos(x+π) lies in the 3rd quadrant. So there cosine has negative values. That is why, cos (x+π) = - cos(x).
Learn more about Cos(x+π) trigonometric formula at brainly.com/question/12243383
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